1 | // |
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2 | // PropertyFileConfiguration.h |
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3 | // |
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4 | // $Id: //poco/1.3/Util/include/Poco/Util/PropertyFileConfiguration.h#1 $ |
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5 | // |
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6 | // Library: Util |
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7 | // Package: Configuration |
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8 | // Module: PropertyFileConfiguration |
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9 | // |
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10 | // Definition of the PropertyFileConfiguration class. |
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11 | // |
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12 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
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13 | // and Contributors. |
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14 | // |
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15 | // Permission is hereby granted, free of charge, to any person or organization |
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16 | // obtaining a copy of the software and accompanying documentation covered by |
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17 | // this license (the "Software") to use, reproduce, display, distribute, |
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18 | // execute, and transmit the Software, and to prepare derivative works of the |
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19 | // Software, and to permit third-parties to whom the Software is furnished to |
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20 | // do so, all subject to the following: |
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21 | // |
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22 | // The copyright notices in the Software and this entire statement, including |
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23 | // the above license grant, this restriction and the following disclaimer, |
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24 | // must be included in all copies of the Software, in whole or in part, and |
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25 | // all derivative works of the Software, unless such copies or derivative |
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26 | // works are solely in the form of machine-executable object code generated by |
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27 | // a source language processor. |
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28 | // |
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29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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35 | // DEALINGS IN THE SOFTWARE. |
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36 | // |
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37 | |
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38 | |
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39 | #ifndef Util_PropertyFileConfiguration_INCLUDED |
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40 | #define Util_PropertyFileConfiguration_INCLUDED |
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41 | |
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42 | |
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43 | #include "Poco/Util/Util.h" |
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44 | #include "Poco/Util/MapConfiguration.h" |
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45 | #include <istream> |
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46 | #include <ostream> |
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47 | |
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48 | |
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49 | namespace Poco { |
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50 | namespace Util { |
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51 | |
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52 | |
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53 | class Util_API PropertyFileConfiguration: public MapConfiguration |
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54 | /// This implementation of a Configuration reads properties |
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55 | /// from a Java-style properties file. |
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56 | /// |
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57 | /// The file syntax is implemented as follows. |
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58 | /// - a line starting with a hash '#' or exclamation mark '!' is treated as a comment and ignored |
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59 | /// - every other line denotes a property assignment in the form |
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60 | /// <key> = <value> or |
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61 | /// <key> : <value> |
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62 | /// |
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63 | /// Keys and values may contain special characters represented by the following escape sequences: |
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64 | /// - \t: tab (0x09) |
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65 | /// - \n: line feed (0x0a) |
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66 | /// - \r: carriage return (0x0d) |
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67 | /// - \f: form feed (0x0c) |
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68 | /// |
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69 | /// For every other sequence that starts with a backslash, the backslash is removed. |
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70 | /// Therefore, the sequence \a would just yield an 'a'. |
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71 | /// |
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72 | /// A value can spread across multiple lines if the last character in a line (the character |
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73 | /// immediately before the carriage return or line feed character) is a single backslash. |
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74 | /// |
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75 | /// Property names are case sensitive. Leading and trailing whitespace is |
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76 | /// removed from both keys and values. A property name can neither contain |
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77 | /// a colon ':' nor an equal sign '=' character. |
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78 | { |
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79 | public: |
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80 | PropertyFileConfiguration(); |
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81 | /// Creates an empty PropertyFileConfiguration. |
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82 | |
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83 | PropertyFileConfiguration(std::istream& istr); |
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84 | /// Creates an PropertyFileConfiguration and loads the configuration data |
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85 | /// from the given stream, which must be in properties file format. |
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86 | |
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87 | PropertyFileConfiguration(const std::string& path); |
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88 | /// Creates an PropertyFileConfiguration and loads the configuration data |
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89 | /// from the given file, which must be in properties file format. |
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90 | |
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91 | void load(std::istream& istr); |
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92 | /// Loads the configuration data from the given stream, which |
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93 | /// must be in properties file format. |
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94 | |
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95 | void load(const std::string& path); |
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96 | /// Loads the configuration data from the given file, which |
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97 | /// must be in properties file format. |
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98 | |
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99 | void save(std::ostream& ostr) const; |
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100 | /// Writes the configuration data to the given stream. |
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101 | /// |
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102 | /// The data is written as a sequence of statements in the form |
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103 | /// <key>: <value> |
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104 | /// separated by a newline character. |
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105 | |
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106 | void save(const std::string& path) const; |
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107 | /// Writes the configuration data to the given file. |
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108 | |
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109 | protected: |
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110 | ~PropertyFileConfiguration(); |
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111 | |
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112 | private: |
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113 | void parseLine(std::istream& istr); |
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114 | static int readChar(std::istream& istr); |
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115 | }; |
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116 | |
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117 | |
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118 | } } // namespace Poco::Util |
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119 | |
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120 | |
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121 | #endif // Util_PropertyFileConfiguration_INCLUDED |
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